Henry dudley-cooper



(No Model.)

H. DUDLEY-COOPER. CONSTRUCTION OFAGLASS 0R PORCELAIN LINED JOINTS.

Patented Apr. 4, 1.893.

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UNITED. STATES PATENT OFFICE.

HENRY DUDLEY-OOOPER, OF LONDON, ENGLAND, ASSIGNOR TO JAMES KEMP-VVELOH,OF SAME PLACE.

CONSTRUCTION OF GLASS OR PORCELAIN LINED JOINTS.

SPECIFICATION forming part of Letters Patent No. 494,671, dated April 4,1893.

Application iiled December 3, 1889. Serial No. 332,480. (No model.)Patented in England February 12, 1887, No. 2.237.

To all whom' it may concern: l

Beit knownthatl,HENRYDUDLEY-COOPER, a subject of the Queen of GreatBritain, residing at London, England, have invented new and usefulImprovements in the Construction of Glass or Porcelain Lined Joints forConnecting Lengths of Similarly-Lined Piping, (for which I have obtaineda patent in Great Britain, No. 2,237, bearing date the 12th day ofFebruary, 1887,) of which the following is a specification.

Figure l. is a side elevation of a T piece joint; Fig. 2. a section ofsame; Fig; 3. a View of glass T previous to being inclosed in the metal;Fig. 4 a side elevation of a crossjoint; Fig. 5. a section of same; Fig.6. a View of glass previous to being inclosed in the metal.

In Figs. 1 and 4, the joints are made as foll lows. A metal T piece orcross of usual construction as used for connecting gas pipes, is firstcut through longitudinally at line a, b, to form two halves A, B,between these are placed the glass T, O, or cross D,-Figs. 3 and 6,- andthe piece A, B, secured together, on the glass by thescrewed on collarsE; further securing together of the pieces, A and B, could be assistedby tinning the edges with solder, and making the parts sufficiently hotto run the solder together; or in place of the collars E, the pieces A,B, could be placed in a sand mold and a baud or bands of solder runround. The internal diameter of the metal T piece is larger than theglass T, to enable a layer of cement F, to be interposed between theglass and metal to hold the former truly central in the metal, andprotect it from damage from the effects of a blow on the metal. Afterthe glass and cement is inserted in the metal, the cement is dried inany suitable manner, and the ends of the joints ground to bring themetal, cement, and glass, perfectly iiush and square. When connectinglengths of piping by these joints a washer is placed between the ends ofjoint and pipe, and the connection made by usual screw cap. A suitablecement maybe made of a mixture of Portland cement and plaster of paris,mixed with water.

Having now described my invention, what I desire to secure by LettersPatent of the United States is- A glass or porcelain lined metal T pieceor -iway joint for connecting lined piping, consisting of the metalparts A. B, glass C, collars E, and cement F, as described and setforth.

HENRY DUDLEY-OOOPER.

Witnesses:

F. PRINCE,

l Quality Court, London, W C'. E. BROWN.

